+ Kelly Clarkson returned to her “American Idol” roots at last night’s results show. See her neon-splashed performance of “People Like Us,” and watch the adorbz lovefest between Kelly and Mariah Carey. (Just Jared)

+ Watch Taylor Swift‘s commercial for Diet Coke, which features her working out the lyrics to “22.” As the ad progresses, people sing along to Taylor’s catchy lyrics, whether they’re driving or cooking. (MTV News)

+ 2 Chainz will showcase his acting chops for an upcoming episode of “Law & Order: SVU.” Check out photos from the set, where he’s hanging with Ice-T and Mariska Hargitay. This isn’t his first TV role — he made his acting debut during an episode of “2 Broke Girls.” (RapFix)

+ Listen to Psy‘s new single, “Gentleman.” Like his smash “Gangnam Style,” it mixes Korean and English lyrics wrapped in beat-laden electro-pop. (MTV News)